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hannob/README.md

I am Hanno Böck, a freelance journalist and IT security professional.

I am passionate about free and open source software, and have created a number of open source security tools.

security tools

I am currently primarily working on badkeys, a tool to detect cryptographic public keys with known vulnerabilities. Its code can be found here.

You may also want to check out snallygaster, a tool to scan web servers for files that should not be public, and freewvs, a tool to scan web roots for web applications with known vulnerabilities.

newsletter / cleantech

I am publishing the Industry Decarbonization Newsletter about cleantech and climate solutions.

Here are some recent articles published there you may find interesting:

elsewhere

Popular repositories Loading

  1. snallygaster snallygaster Public

    Tool to scan for secret files on HTTP servers

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  2. bashcheck bashcheck Public

    test script for shellshocker and related vulnerabilities

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  3. php-crashers php-crashers Public

    Example scripts that cause segfaults in PHP

    PHP 447 24

  4. vulns vulns Public

    Named vulnerabilities and their practical impact

    434 29

  5. meltdownspectre-patches meltdownspectre-patches Public

    Summary of the patch status for Meltdown / Spectre

    348 45

  6. vacdec vacdec Public

    Python script to decode the EU Covid-19 vaccine certificate

    Python 242 84

932 contributions in the last year

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Contribution activity

April 2025

Opened 4 pull requests in 2 repositories

Created an issue in badkeys/badkeys that received 3 comments

Unexpected exception with RSA key with N=0

A malformed RSA key with N=0 causes an unexpected exception in badkeys (IndexError in xzbackdoor module, may also trigger additional bugs in other …

3 comments
Opened 4 other issues in 4 repositories
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